title: A scaling approach for interacting quantum wires--a possible explanation for the 0.7 anomalous conductance.
abstract: We consider a weakly interacting finite wire with short and long range interactions. The long range interactions enhance the 4k(F) scattering and renormalize the wire to a strongly interacting limit. For large screening lengths, the renormalized charge stiffness Luttinger parameter K(eff) decreases to [Formula: see text], giving rise to a Wigner crystal at T=0 with an anomalous conductance at finite temperatures. For short screening lengths, the renormalized Luttinger parameter K(eff) is restricted to ½≤K(eff)≤1. As a result, at temperatures larger than the magnetic exchange energy we find an interacting metal which, for K(eff)≈½, is equivalent to the Hubbard U−>∞ model, with the anomalous conductance G≈e(2)/h.
authors.affiliation: Department of Physics, City College of the CUNY, USA.
authors.forename: D
authors.initials: D
authors.lastname: Schmeltzer
authors.forename: A
authors.initials: A
authors.lastname: Kuklov
authors.forename: M
authors.initials: M
authors.lastname: Malard